Set of 4X 4D Cooling Gel Technology Memory Foam Removable Outer Cover Hypoallergenic PillowSet of 4X 4D Cooling Gel Technology Memory Foam Removable Outer Cover Hypoallergenic Pillow Product Description Memory foam Pillow The pillow is made of memory foam that adapts to your neck and head and provides complete support while resting on it. Better Air Circulation Cooling technology facilitates better circulation which prevents overheating and keep you cool and supported while sleeping. Hypoallergenic Inner Cover The pillow comes with a